package com.swpu.project.config;


import com.swpu.project.exception.AccessDeniedExceptionHandler;
import com.swpu.project.exception.AuthenticationFailedExceptionHandler;
import com.swpu.project.filter.LoginFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import javax.annotation.Resource;

@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Resource
    private LoginFilter loginFilter;
    @Resource
    AuthenticationFailedExceptionHandler authenticationFailedExceptionHandler;
    @Resource
    AccessDeniedExceptionHandler accessDeniedExceptionHandler;
    @Bean
    public PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //关闭csrf
                .csrf().disable()
                //不通过Session获取SecurityContext
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                // 对于登录接口 允许匿名访问
                .antMatchers("/user/login").anonymous()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();

          http
                  .addFilterBefore(loginFilter, UsernamePasswordAuthenticationFilter.class);



          http



               .exceptionHandling()
               .authenticationEntryPoint(authenticationFailedExceptionHandler)
               .accessDeniedHandler(accessDeniedExceptionHandler);



    http

            .cors();

    }



}